This is a 4 Finish Cut Blade; most people will want to use between a 4 and 7 for their Shih Tzu for a short “puppy cut” style. Most people likely will want closer to a 4, the smaller the number, the longer it leaves the hair. However, leaving the hair longer also means there is more of a combing action that takes place when your clipping, so the dog needs to be combed out and free of knots and mats to use a blade that leaves the coat longer (like a 4 or 7).

This is a spray coolant / lubricant, you don’t really want to breathe this stuff, but can be very handy. Even well maintained blades on a fast clipper will warm up and you have to cool them down so you don’t burn the dog. You can stop and wait, switch blades or you can use some of this stuff. I go outside or in a different room to use it.